Mel Gorman e0fff1bd12 tracing, page-allocator: add trace events for anti-fragmentation falling back to other migratetypes ... Fragmentation avoidance depends on being able to use free pages from lists of the appropriate migrate type. In the event this is not possible, __rmqueue_fallback() selects a different list and in some circumstances change the migratetype of the pageblock. Simplistically, the more times this event occurs, the more likely that fragmentation will be a problem later for hugepage allocation at least but there are other considerations such as the order of page being split to satisfy the allocation. This patch adds a trace event for __rmqueue_fallback() that reports what page is being used for the fallback, the orders of relevant pages, the desired migratetype and the migratetype of the lists being used, whether the pageblock changed type and whether this event is important with respect to fragmentation avoidance or not. This information can be used to help analyse fragmentation avoidance and help decide whether min_free_kbytes should be increased or not. Signed-off-by: Mel Gorman <mel@csn.ul.ie> Acked-by: Rik van Riel <riel@redhat.com> Reviewed-by: Ingo Molnar <mingo@elte.hu> Cc: Larry Woodman <lwoodman@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Li Ming Chun <macli@brc.ubc.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2009-09-22 07:17:34 -07:00
..
Kconfig	ksm: add some documentation	2009-09-22 07:17:33 -07:00
Kconfig.debug	kmemcheck: enable in the x86 Kconfig	2009-06-15 15:49:15 +02:00
Makefile	ksm: the mm interface to ksm	2009-09-22 07:17:31 -07:00
allocpercpu.c	percpu: use dynamic percpu allocator as the default percpu allocator	2009-06-24 15:13:35 +09:00
backing-dev.c	writeback: splice dirty inode entries to default bdi on bdi_destroy()	2009-09-16 15:18:52 +02:00
bootmem.c	kmemleak: Do not report alloc_bootmem blocks as leaks	2009-08-27 14:29:17 +01:00
bounce.c	block: remove some includings of blktrace_api.h	2009-06-16 11:19:36 +02:00
debug-pagealloc.c	generic debug pagealloc	2009-04-01 08:59:13 -07:00
dmapool.c	dmapools: protect page_list walk in show_pools()	2009-06-30 18:56:00 -07:00
fadvise.c	readahead: move max_sane_readahead() calls into force_page_cache_readahead()	2009-06-16 19:47:28 -07:00
failslab.c	kmemtrace, mm: fix slab.h dependency problem in mm/failslab.c	2009-04-03 12:23:01 +02:00
filemap.c	mm: oom analysis: add shmem vmstat	2009-09-22 07:17:27 -07:00
filemap_xip.c	mm: do_xip_mapping_read: fix length calculation	2009-04-02 19:04:49 -07:00
fremap.c	Do not account for the address space used by hugetlbfs using VM_ACCOUNT	2009-02-10 10:48:42 -08:00
highmem.c	block: remove some includings of blktrace_api.h	2009-06-16 11:19:36 +02:00
hugetlb.c	hugetlb: restore interleaving of bootmem huge pages	2009-09-22 07:17:26 -07:00
init-mm.c	mm: consolidate init_mm definition	2009-06-16 19:47:28 -07:00
internal.h	vmscan: do not unconditionally treat zones that fail zone_reclaim() as full	2009-06-16 19:47:45 -07:00
kmemcheck.c	kmemcheck: add hooks for the page allocator	2009-06-15 15:48:33 +02:00
kmemleak-test.c	percpu: clean up percpu variable definitions	2009-06-24 15:13:48 +09:00
kmemleak.c	kmemleak: Improve the "Early log buffer exceeded" error message	2009-09-11 10:42:09 +01:00
ksm.c	ksm: unmerge is an origin of OOMs	2009-09-22 07:17:33 -07:00
maccess.c	[S390] maccess: add weak attribute to probe_kernel_write	2009-06-12 10:27:37 +02:00
madvise.c	ksm: the mm interface to ksm	2009-09-22 07:17:31 -07:00
memcontrol.c	cgroup avoid permanent sleep at rmdir	2009-07-29 19:10:35 -07:00
memory.c	ksm: fix deadlock with munlock in exit_mmap	2009-09-22 07:17:32 -07:00
memory_hotplug.c	memory hotplug: update zone pcp at memory online	2009-09-22 07:17:25 -07:00
mempolicy.c	mm: make set_mempolicy(MPOL_INTERLEAV) N_HIGH_MEMORY aware	2009-08-07 10:39:55 -07:00
mempool.c	mempool.c: clean up type-casting	2009-08-10 08:31:16 -07:00
migrate.c	mm: vmstat: add isolate pages	2009-09-22 07:17:29 -07:00
mincore.c	[CVE-2009-0029] System call wrappers part 14	2009-01-14 14:15:24 +01:00
mlock.c	mm: remove CONFIG_UNEVICTABLE_LRU config option	2009-06-16 19:47:42 -07:00
mm_init.c	…
mmap.c	ksm: clean up obsolete references	2009-09-22 07:17:33 -07:00
mmu_notifier.c	ksm: add mmu_notifier set_pte_at_notify()	2009-09-22 07:17:31 -07:00
mmzone.c	[ARM] Double check memmap is actually valid with a memmap has unexpected holes V2	2009-05-18 11:22:24 +01:00
mprotect.c	perf: Do the big rename: Performance Counters -> Performance Events	2009-09-21 14:28:04 +02:00
mremap.c	ksm: mremap use err from ksm_madvise	2009-09-22 07:17:33 -07:00
msync.c	[CVE-2009-0029] System call wrappers part 13	2009-01-14 14:15:23 +01:00
nommu.c	nommu: fix error handling in do_mmap_pgoff()	2009-09-05 11:30:42 -07:00
oom_kill.c	ksm: unmerge is an origin of OOMs	2009-09-22 07:17:33 -07:00
page-writeback.c	mm: count only reclaimable lru pages	2009-09-22 07:17:30 -07:00
page_alloc.c	tracing, page-allocator: add trace events for anti-fragmentation falling back to other migratetypes	2009-09-22 07:17:34 -07:00
page_cgroup.c	memory hotplug: alloc page from other node in memory online	2009-09-22 07:17:26 -07:00
page_io.c	mm: remove file argument from swap_readpage()	2009-06-16 19:47:44 -07:00
page_isolation.c	…
pagewalk.c	…
percpu.c	Merge branch 'for-next' into for-linus	2009-09-15 09:57:19 +09:00
prio_tree.c	…
quicklist.c	percpu: cleanup percpu array definitions	2009-06-24 15:13:45 +09:00
readahead.c	readahead: introduce context readahead algorithm	2009-06-16 19:47:30 -07:00
rmap.c	ksm: no debug in page_dup_rmap()	2009-09-22 07:17:31 -07:00
shmem.c	Driver Core: devtmpfs - kernel-maintained tmpfs-based /dev	2009-09-15 09:50:49 -07:00
shmem_acl.c	shmfs: use 'check_acl' instead of 'permission'	2009-09-08 11:08:46 -07:00
slab.c	SLAB: Fix lockdep annotations	2009-06-29 09:57:10 +03:00
slob.c	slab: remove duplicate kmem_cache_init_late() declarations	2009-08-06 11:36:25 +03:00
slub.c	mm: kmem_cache_create(): make it easier to catch NULL cache names	2009-09-22 07:17:33 -07:00
sparse-vmemmap.c	memory hotplug: alloc page from other node in memory online	2009-09-22 07:17:26 -07:00
sparse.c	memory hotplug: alloc page from other node in memory online	2009-09-22 07:17:26 -07:00
swap.c	mm: fix Committed_AS underflow on large NR_CPUS environment	2009-05-02 15:36:10 -07:00
swap_state.c	writeback: add name to backing_dev_info	2009-09-11 09:20:26 +02:00
swapfile.c	ksm: unmerge is an origin of OOMs	2009-09-22 07:17:33 -07:00
thrash.c	mm: pass mm to grab_swap_token	2009-06-23 12:50:05 -07:00
truncate.c	mm: remove __invalidate_mapping_pages variant	2009-06-16 19:47:43 -07:00
util.c	Merge branches 'slab/documentation', 'slab/fixes', 'slob/cleanups' and 'slub/fixes' into for-linus	2009-06-17 08:30:15 +03:00
vmalloc.c	kcore: fix vread/vwrite to be aware of holes	2009-09-22 07:17:34 -07:00
vmscan.c	vmscan: kill unnecessary prefetch	2009-09-22 07:17:30 -07:00
vmstat.c	mm: vmstat: add isolate pages	2009-09-22 07:17:29 -07:00